EN 14081-4:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Holzbauwerke - Nach Festigkeit sortiertes tragende Zwecke mit rechteckigem Querschnitt - Teil 4: Maschinelle Sortierung - Einstellung von sortiemaschinenkontrollierte SystemeStructures en bois - Bois de structure de section rectangulaire clasé selon la résistance - Partie 4: Classement par machine - Réglages pour les systèmes de contrôle par machineTimber structures - Strength graded structural timber with rectangular cross section - Part 4: Machine grading - Grading machine settings for machine controlled systems91.080.20Lesene konstrukcijeTimber structures79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:Ta slovenski standard je istoveten z:EN 14081-4:2009SIST EN 14081-4:2009en,fr,de01-november-2009SIST EN 14081-4:2009SLOVENSKI
STANDARDSIST EN 14081-4:2005+A4:20091DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14081-4May 2009ICS 79.040; 79.120.10Supersedes EN 14081-4:2005+A4:2008
English VersionTimber structures - Strength graded structural timber withrectangular cross section - Part 4: Machine grading - Gradingmachine settings for machine controlled systemsStructures en bois - Bois de structure de sectionrectangulaire classé selon la résistance - Partie 4:Classement par machine - Réglages pour les systèmes decontrôle par machineHolzbauwerke - Nach Festigkeit sortiertes Bauholz fürtragende Zwecke mit rechteckigem Querschnitt - Teil 4:Maschinelle Sortierung - Einstellungen vonSortiermaschinen für maschinenkontrollierte SystemeThis European Standard was approved by CEN on 7 April 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14081-4:2009: ESIST EN 14081-4:2009

2 Contents Page Foreword . 31Scope . 42Normative references . 43Terms and definitions . 44Symbols . 45Settings for timber strength grading machines . 5Table 1 - Settings for Cook Bolinder (Tecmach) machine types SG-AR, SG-AF and SG-TF . 6Table 2 - Settings for Computermatic and Micromatic machines . 9Table 3 - Settings for Raute Timgrader machines (Model given in TG1/1007/06) . 13Table 4 - Settings for Euro-GreComat 702 (Model given in TG1/0107/08) . 14Table 5 - Settings for GoldenEye 702 (Model given in TG1/1005/08 for GB & IE; TG1/1005/09Rev for DE, AT & CZ) . 15Table 6 - Settings for Euro-GreComat 704 (Model given in TG2/0103/02) . 25Table 7 - Settings for Dynagrade machine (including HC and XHC) . 27Table 8 - Settings for ViSCAN machine (Model given in TG1/1005/03) . 35Table 9 - Settings for EuroGreComat 706 (Model given in TG1/0107/09) . 45Table 10 - Settings for GoldenEye 706 (Model given in TG1/1005/04Rev2) . 46Table 11 - Settings for Timber Grader MTG with connected balance (Model given in TG1/0307/05) . 57Table 12 - Settings for Precigrader machine . 60Table 13 - Settings for Grademaster (Model given in TG1/1007/13Rev) . 64Table 14 - Settings for E-scan machine (Model given in TG1/0508/17Rev). . 65Table 15 - Settings for Triomatic machine (Model given in TG1/0508/14Rev). . 66Bibliography . 69 SIST EN 14081-4:2009

3Foreword This document (EN 14081-4:2009) has been prepared by Technical Committee CEN/TC 124 “Timber structures”, the secretariat of which is held by SFS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2009, and conflicting national standards shall be withdrawn at the latest by November 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14081-4:2005+A4:2008. Other parts of this European Standard are EN 14081-1, Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements EN 14081-2, Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine Grading; additional requirements for initial type testing EN 14081-3, Timber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine Grading; additional requirements for factory production control According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
4 1 Scope This European Standard gives settings, derived according to the requirements given in EN 14081-2, for various combinations of strength classes or grades, grading machines and species from particular sources of growth. These settings are only applicable to timber from the sources indicated in the tables. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 336, Structural timber – Sizes, permitted deviations EN 14081-1:2005, Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements EN 14081-2:2005, Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine Grading; additional requirements for initial type testing 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14081-1:2005, EN 14081-2:2005 and the following apply. 3.1
Speed range maximum and minimum throughput speeds appropriate to the critical speed for the derived settings (see 6.2.2 of EN 14081-2:2005). 4 Symbols a deflection (in mm) b width of timber cross section (in mm)
Et,mean characteristic mean tensile modulus of elasticity parallel to grain (in N/mm2)
E0,mean characteristic mean bending modulus of elasticity parallel to grain (in N/mm2)
Edyn value of dynamic modulus of elasticity (in N/mm2) Emod model value of modulus of elasticity (units as stated) F force (units as stated) ft,k characteristic tensile strength (in N/mm2)
5fm,k characteristic bending strength (in N/mm2)
fmod model value of strength (in N/mm2) I indicating property (units as stated) P pressure (units as stated) t thickness of timber cross section (in mm) vc conveyer speed (in m/sec) ρk characteristic value of density (in kg/m3)
ρmod model value of density (in kg/m3)
subscripts
n for setting being calculated a actual size measured as the average dimension of a batch 5 Settings for timber strength grading machines Tables 1 to 15 give settings for certain grades, timber species and types of grading machine. The accepted grading machines and settings in this European Standard are based on initial type testing (ITT) and initial type calculation (ITC). When additional ITT and ITC documentation from the manufacturers has been evaluated by CEN/TC124/TG1 and the accepted values are given in an ITT report, which is the basis for certification by the Notified Bodies overseeing the producers factory production control (FPC). Those ITT reports may be used as ITT documentation before the information they contain becomes available in an amendment or revision of this European Standard, EN 14081-4. SIST EN 14081-4:2009

Picea abies Picea sitchensis 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 2,68 2,27 Requirements for grading:
- Air temperature between +10°C and +35°C - Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 150 m/min
The following equations shall be used to calculate settings for the target size bn x tn. (Note. For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm).
an = 830,7 tn-1,299
(mm)
Pn = 4,412 Fn / tn0,61
(bar)
()572739,413n1.701nnn+=ttFbF
(kN) C16 1,24 Pine
Pinus nigra Pinus sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 2,79 1,91 C16 1,34 Chile CL Radiata pine Pinus radiata 35 ≤ tn ≤ 50 60 ≤ bn ≤ 300 C27 C16 3,03 1,43 C24 C16 2,32 2,09 C16 0,92 a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Grades prefixed by C are strength classes given in EN 338
ƒmod Comments and adjustments for size Estonia Finland Latvia Norway Russiad) Sweden Poland
Finland Norway Sweden Latvia EE FI LV NO RU SE PL
FI NO SE LV Spruce Picea abies
Pine Pinus
sylvestris 30 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C18 20,8 Requirements for grading:
- Air temperature between +10°C and +35°C - Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 150 m/min
The following equations shall be used to calculate settings for the target size bn x tn. (Note. For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm). Pn = 4,412 Fn / tn0,61
(bar)
Fn
= (5,5I n n bntn3)10-12
(kN)
an = 830,7 tn-1,299
(mm)
I n = 79.0mod24,022,0f4228nnbt C24 20,8 C27 21,8 C30 28,5 C35 C24 46,5 20,0 C40 C30 C18 54,5 30,6 23,8 a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Grades prefixed by C are strength classes given in EN 338 d) Settings apply only to timber grown west of the Ural mountain range and north of the 550 line of latitude in Russia
Species Permitted timber sizesb) (mm) Gradec) or grade combinationModel value Force F (kN) Comments and adjustments for size Spain ES Scots pine Pinus sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C27 C16 2,84 1,71 Requirements for grading: - Air temperature between +10°C and +35°C - Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 100 m/min The following equations shall be used to calculate settings for the target size bn x tn. (Note. For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm). an = 830,7 tn-1,299
(mm) Pn = 4,412 Fn / tn0,61
(bar) ()572739,413n1.701nnn+=ttFbF Spain ES Corsican pine Pinus nigra 40 ≤ tn ≤ 70 100 ≤ bn≤ 200 C30 C18 Not relevant as all settings shall be calculated using equations in comments column Requirements for grading: - Air temperature between +10°C and 35°C - Relative humidity in the air: < 85 % - Timber temperature: > -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 100 m/min The following equations shall be used to calculate settings for the target size bn x tn. (Note. For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm). an = 830,7 tn-1,299
(mm) Pn = 4,412 Fn / tn0,61
(bar) FnC30 = (96,2979 – 0,489321tn)anbntn3 / (1,3189433.109 ) FnC18 = (54,4979 – 0,489321tn)anbntn3 / (1,3189433.109 ) a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Grades prefixed by C are strength classes given in EN 338
-Settings for Computermatic and Micromatic machines Source country or countries Source marka) Species Permitted timber sizesb) (mm) Gradec) or grade combination Model value Deflection a (mm) Comments and additional requirements UK Ireland GB IE Spruce Picea abies Picea
sitchensis 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 6,35 7,49 Requirements for grading: - Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 105 m/min
The following equations shall be used to calculate settings for the target size bn x tn. (Note. For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm).
Fn = 0,0101 bn tn2
(N)
()()91,0109851,07846,000567,071,36nn5nnn+×+=−btttaa
(Bits)
Actual deflection settings are determined from an/0,19 rounded to the nearest whole number. Refer to calibration tables for machine to convert Force Fn to pressure setting C16 13,78 Pine Pinus nigra Pinus
sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 6,10 8,90 C16 12,74 Chile CL Radiata pine Pinus radiata 35 ≤ tn ≤ 50 60 ≤ bn ≤ 300 C27 C16 5,62 11,86 C24 C16 7,35 8,13 C16 18,52 a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Grades prefixed by C are strength classes given in EN 338
- Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 105 m/min
The following equations shall be used to calculate settings for the target size bn x tn where bn and tn are target dimensions. Refer to calibration tables for machine to convert Fn to pressure setting. 20101,0nnntbF⋅⋅=
(N)
⋅⋅−⋅⋅⋅=−mod152,0186,0mod152,0814,014,218063fbtfbtannnnn
(Bits) Actual deflection setting an shall be rounded to the nearest whole number of Bits (Bits are units of 0,19mm). If the actual thickness ta exceeds the target thickness tn by more than 1 mm then the pressure shall be increased by 3natt a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Grades specified by C are strength classes given in EN 338
(continued) Source country or countries Source marka) Species Permitted timber sizesb) (mm) Gradec) or grade combination Model value Deflection a(mm) Comments and additional requirements Finland Norway Sweden Estonia Latvia Russiad) Poland
Finland Norway Sweden Latvia FI NO SE ES LV RU PL
FI NO SE LV Spruce Picea Abies
Pine Pinus Sylvestris 30 ≤ tn ≤ 75 60 ≤ bn ≤ 300C24 9,82 Requirements for grading:
- Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 105 m/min
The following equations shall be used to calculate settings for the target size bn x tn where bn and tn are target dimensions. Refer to calibration tables for machine to convert Fn to pressure setting. 20101,0nnntbF=
(N)
19,015050500901,0186,0−=nnnnbttaa
(Bits)
Actual deflection settings an shall be rounded to the nearest whole number of Bits (Bits are units of 0,19 mm). If the actual thickness ta exceeds the target thickness tn more than 1 mm then the pressure shall be increased by 3natt C27 6,21 C30 4,75 C35 3,40 C27 C16 5,85 8,92 C30 C18 4,75 9,82 C30 C24 C18 4,46 5,49 8,92 C35 C24 C18 3,40 4,94 7,96 C40 C27 2,83 5,49 a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Grades specified by C are strength classes given in EN 338 d) Settings apply only to timber grown west of the Ural mountain range and north of the 550 line of latitude in Russia
(continued) Source country or countries Source marka) Species Permitted timber sizesb) (mm) Grade or grade combinationModel value Deflection a (mm) Comments and additional requirements Finland Norway
Sweden Estonia Latvia Russiac) Poland
Finland Norway Sweden Latvia FI NO SE ES LV RU PL
FI NO SE LV Spruce Picea Abies
Pine Pinus Sylvestris 30 ≤ tn ≤ 75 60 ≤ bn ≤ 300 TR26 6,21 Requirements for grading:
- Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Maximum feed speed: 105 m/min The following equations shall be used to calculate settings for the target size bn x tn where bn and tn are target dimensions. Refer to calibration tables for machine to convert Fn to pressure setting. 20101,0nnntbF=
(N)
19,015050500901,0186,0−=nnnnbttaa
(Bits) Actual deflection settings an shall be rounded to the nearest whole number of Bits (Bits are units of 0,19 mm). If the actual thickness ta exceeds the target thickness tn more than 1 mm then the pressure shall be increased by 3natt. TR26 is a UK grade for trussed rafters. Its primary characteristic values are: ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Settings apply only to timber grown west of the Ural mountain range and north of the 550 line of latitude in Russia
fmod Comments and additional requirements Finland Norway Sweden Estonia. Latvia Russiad) Poland
FI NO SE ES LV RU PL
Spruce Picea abies
30 ≤ tn ≤ 50 60 ≤ bn ≤ 225
C45 C30 C18 56,5 34,1 22,0 Requirements for grading:
- Air temperature between +10°C and +50°C - Relative humidity in the air: <= 85 % - Timber temperature: >= -10 °C - Timber mean moisture content: > 10 % - Feed speed between 48 m/min and 124 m/min - Cupped timber shall not be graded
The following equation shall be used to calculate settings afbtF630,0mod740,0n093,2nn002792,0= where Fn is the indicating property in N (to obtain the indicating property in kilopond Fn shall be divided by 9,81), tn is the target thickness in mm, bn is the target width in mm (Note: For timber with a thickness to tolerance class 1, i.e. sawn, tn in the above equation is the target tn + 1 mm) and fmod is given in the 6th column of this table for each grade. a is the pre-set deflection in mm and shall be: a = 1,6 mm
for 47 ≤ tn ≤ 50 mm a = 2,0 mm
for 36 ≤ tn ≤ 37 mm a = 1,7 mm
for 44 ≤ tn ≤ 46 mm
a = 2,1 mm
for 34 ≤ tn ≤ 35 mm a = 1,8 mm
for 41 ≤ tn ≤ 43 mm
a = 2,2 mm
for 32 ≤ tn ≤ 33 mm
a = 1,9 mm
for 38 ≤ tn ≤ 40 mm
a = 2,3 mm
for 30 ≤ tn ≤ 31 mm
The pre-set pressure shall be 23 Bar
The settings for C35-TR26-C18 can also be used for C35-C24-C18
The characteristic values for the TR26 grade are:
ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. C40 C30 C18 53,4 34,3 22,0 C35 TR26 C18 44,6 34,1 22,0 Finland Norway Sweden Latvia Russiad)
FI NO SE LV RU Pine Pinus
sylvestris 30 ≤ tn ≤ 50 60 ≤ bn ≤ 225
C45 C30 C18 56,5 34,1 22,0 C40 C30 C18 53,4 34,3 22,0 C35 TR26 C18 44,6 34,1 22,0 a) See Clause 7.3 in EN 14081-1:2005 b) Timber sizes shall be to EN 336 c) Grades prefixed by C are strength classes given in EN 338 d) Settings apply only to timber grown west of the Urals and north of the 55 degree line of latitude SIST EN 14081-4:2009

Table 4-1 - Settings for Euro-GreComat 702 (Model given in TG1/0107/08) Source country or countries Source marka) Species Permitted timber sizeb) (mm) Grade or grade combination Model value
fmod Comments and additional requirements Germany Austria Czech Republic DE AT CZ Spruce Picea abies
Fir Abies alba 30 ≤ tn ≤ 50 95 ≤ bn ≤ 280 L36 L25 34,5 22,3 Requirements for grading: - Timber temperature: > 0°C - Mean moisture content of each piece between 8% and 20%
- Feed speed between 80 and 300 m/min - Timber surface planed or sawn
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
L36 L35 L25 L24 ft,k (N/mm²) 22,0 21,0 14,5 14,0 Et,mean (kN/mm²) 13,0 13,0 11,0 11,0 ρk (kg/m³) 400 400 350 350 30 ≤ tn ≤ 55 80 ≤ bn ≤ 280 L35 L24 34,0 21,0 a) See Clause 7.3 in EN 14081-1:2005 b) Timber size shall be to EN 336
I Comments and additional requirements UK Ireland GB IE Sitka spruce Picea sitchensis 35 ≤ tn ≤ 80 70 ≤ bn ≤ 260 C24 C16 Emod = 10 800 Emod = 6 000 Requirements for grading: - Timber temperature: > 0°C - Mean moisture content of each piece between 10% and
30% - Maximum feed speed: 450 m/min
- Timber surface planed or sawn
The moisture content shall be measured for each piece by an In-line system. C16 Emod = 5 200 Germany Austria Czech Republic DE AT CZ Spruce Picea abies
Fir Abies alba 38 ≤ tn ≤ 100 89 ≤ bn ≤ 250 C27 C16 fmod = 36,0 fmod = 21,4 Requirements for grading: - Timber temperature: > 0°C - Mean moisture content of each piece between 8% and
18% - Maximum feed speed: 450 m/min - Timber surface planed or sawn C24 C18 fmod = 34,4 fmod = 30,8 C24 C16 fmod = 34,4 fmod = 29,8 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber size shall be to EN 336 d) Grades prefixed by C are strength classes given in EN 338 SIST EN 14081-4:2009

fmod Comments and additional requirements Germany Austria Czech Republic DE AT CZ Spruce Picea abies
Fir Abies alba 30 ≤ tn ≤ 50 95 ≤ bn ≤ 280 L25 L17 21,6 16,9 Requirements for grading: - Timber temperature: > 0°C - Mean moisture content of each piece between 7% and 15%
- Maximum feed speed: 450 m/min - Timber surface planed or sawn
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
L40 L36 L25 L17 ft,k (N/mm²) 26,0 22,0 14,5 11,0 Et,mean (kN/mm²) 14,0 13,0 11,0 9,0 ρk (kg/m³) 420 400 350 320 L36 L25 L17 32,9 26,8 14,7 L40 L25 L17 39,6 20,8 19,1 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber size shall be to EN 336
Fir Abies alba 35 ≤ tn ≤ 110 80 ≤ bn ≤ 258 C24 26,4 4 900 322 Requirements for grading: - Timber temperature: > 0°C - Mean moisture content of each piece between 10% and 18% - Maximum feed speed: 450 m/min - Timber surface planed or sawn
TR26 is a UK grade for trussed rafters. Its primary characteristic values are: ƒm,k = 28,3 N/mm²,
E0,mean =11000 N/mm², k =370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384.
C27 C16 34,2 22,1 5 000 4 900 344 322 C30 C16 41,5 16,2 5 700 4 900 360 322 C35 C27 C16 52,0 37,8 15,4 10 000 5 000 4 900 396 347 322 TR26 C16 37,7 17,4 5 000 4 900 344 322 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber size shall be to EN 336
CH FI NO SE ES LV RU PL Spruce Picea abies
Fir Abies alba 26 ≤ tn ≤ 66 63 ≤ bn ≤ 319 L22 6,8 5 200 305 Requirements for grading: - Timber temperature: > 0°C - Mean moisture content of each piece between 7% and 15%
- Maximum feed speed: 450 m/min - Timber surface planed or sawn
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
L40 L36 L30 L27 L25 ft,k (N/mm²) 26,0 22,0 18,0 16,0 14,5 Et,mean (kN/mm²) 14,0 13,0 12,0 11,5 11,0 ρk (kg/m³) 420 400 380 370 350
L22 L17 ft,k (N/mm²) 13,0 11,0 Et,mean (kN/mm²) 10,0 9,0 ρk (kg/m³) 340 320 L25 16,9 3 900 334 L27 L17 21,0 12,4 4 000 6 800 377 305 L30 L17 25,4 6,8 7 900 5 200 390 305 L40 L25 39,8 19,1 11 600 8 600 434 322 L36 L25 L17 32,3 20,9 16,4 10 100 8 900 7 900 412 331 305 L40 L30 L17 39,8 31,2 6,8 11 600 9 400 5 200 434 385 305 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber size shall be to EN 336 d) Settings apply only to timber grown west of the Ural mountain range in Russia and north of the 55° line of latitude.
Table 5-5 - Settings for GoldenEye 702 (Model given in TG1/1007/08a) (continued) Source country or countries Source mark b)Species Permitted timber size a) c) (mm) Grade or grade combination Model value Comments and additional requirements fmod Emod ρmod Finland Norway Sweden Estonia Latvia Russiad) Poland FI NO SE ES LV RU PL Spruce Picea abies 34 ≤ tn ≤ 55 90 ≤ bn ≤ 220 LD26 LD18 LD11 35,6 23,8 9,0 11800 10300 7000 407 365 315 Requirements for grading: - Timber temperature > 0°C - Timber mean moisture content between 8% and 20%. The moisture content of the individual timber pieces shall not deviate more than ±4 % from the mean value. - Maximum feed speed 450 m/min for X-ray part. - Timber surface planed or sawn
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
LD26 LD22 LD18 LD15 LD11 ft,k N/mm2 26,0 22,0 18,0 14,5 11,0 Et,mean kN/m2 14,0 13,0 12,0 11,0 9,0 ρk kg/m3 410 390 370 350 320
LD26 LD15 35,6 9,5 11800 7500 426 325 LD22 LD15 27,3 14,3 10800 10000 385 353 LD22 LD11 27,3 9,0 10800 7000 385 315 LD18 10,0 8000 356 LD15 9,5 7500 325 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber size shall be to EN 336 d) Settings apply only to timber grown west of the Urals and north of the 55 degree line of latitude
fmod Comments and additional requirements Finland Norway Sweden Estonia Latvia Russiae) Poland FI NO SE ES LV RU PL Spruce Picea abies 32 ≤ tn ≤ 82 68 ≤ bn ≤ 305 C40 C30 C18 55,6 40,2 13,5 Requirements for grading: - Timber temperature: > 0 °C - Timber mean moisture content between 8% and 20%. The moisture content of the individual timber pieces shall not deviate more than ±4 % from the mean value. - Timber surface finish planed or sawn - Maximum feed speed: 450 m/min
The settings for C30-C18 can also be used for TR26-C18
TR26 is a UK grade for trussed rafters. Its primary charac-teristic values are: ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. C30 C18 36,5 13,5 C35 C27 C18 52,3 37,6 13,5 C35 C24 52,3 22,7 C27 C16 35,9 13,5 TR26 C16 29,9 13,5 C24 13,5 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber sizes shall be according to EN 336 d) Grades prefixed by C are strength classes given in EN 338 e) Settings apply only to timber grown west of the Urals and north of the 55 degree line of latitude
TR26 is a UK grade for trussed rafters. Its primary charac-teristic values are: ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. C40 TR26 C16 52,3 30,3 16,5 410 350 300 C40 C27 C18 52,3 33,9 29,3 410 360 310 C40 C27 C16 52,3 33,0 16,5 410 360 300 C40 C24 52,3 16,5 410 310 C35 C30 C18 48,3 40,8 16,5 390 375 310 C35 TR26 C18 48,3 33,5 27,9 390 360 310 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber sizes shall be according to EN 336 d) Grades prefixed by C are strength classes given in EN 338 e) Settings apply only to timber grown west of the Urals and north of the 55 degree line of latitude
TR26 is a UK grade for trussed rafters. Its primary charac-teristic values are: ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. C35 C24 C16 48,3 30,0 16,5 390 340 300 C35 C18 48,3 16,5 390 310 C30 C18 31,3 27,0 370 310 C30 C16 31,3 16,5 370 300 TR26 26,5 360 C27 21,8 340 C24 16,5 310 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber sizes shall be according to EN 336 d) Grades prefixed by C are strength classes given in EN 338 e) Settings apply only to timber grown west of the Urals and north of the 55 degree line of latitude
fmod Comments and additional requirements Finland Russiae) FI RU Pine Pinus sylvestris 35 ≤ tn ≤ 70 90 ≤ bn ≤ 220 C40 C30 C18 52,4 44,6 8,5 Requirements for grading: - Timber temperature: > 0 °C - Timber mean moisture content between 8% and 20%. The moisture content of the individual timber pieces shall not deviate more than ±4 % from the mean value. - Timber surface finish planed or sawn - Maximum feed speed: 450 m/min
TR26 is a UK grade for trussed rafters. Its primary charac-teristic values are: ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. C40 C24 C16 52,4 35,8 8,5 C35 C24 C18 45,4 35,8 24,4 C35 C24 C16 45,4 38,7 8,5 C35 C18 45,4 8,5 C30 C18 32,2 28,6 C30 C16 32,4 12,2 TR26 C16 31,2 14,0 C27 C16 28,3 22,2 C24 20,7 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber sizes shall be according to EN 336 d) Grades prefixed by C are strength classes given in EN 338 e) Settings apply only to timber grown west of the Urals and north of the 55 degree line of latitude
- Maximum feed speed: 450 m/min
- Timber surface planed or sawn
C 35 C 24 C 18 50,0 46,3 32,2 C 35 C 18 50,0 28,0 C 30 C 18 44,0 30,4 C 24 C 18 41,0 33,8 C 18 21,1 a) These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. The sizes of the two pieces after splitting must be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b) See Clause 7.3 in EN 14081-1:2005 c) Timber size shall be to EN 336 d) Grades prefixed by C are strength classes given in EN 338 SIST EN 14081-4:2009

Table 6-1 - Settings for Euro-GreComat 704 (Model given in TG2/0103/02) Source country or countries Source marka) Species Permitted timber sizeb) (mm) Grade or grade combination Model value
fmod Comments and additional requirements Germany Austria Czech Republic DE AT CZ Spruce Picea abies
Fir Abies alba 18 ≤ tn ≤ 55 80 ≤ bn ≤ 280 L40 L35 L24 L16 40,0 31,0 19,0 14,0 Requirements for grading: - Timber temperature: > 0°C - Mean moisture content of each piece between 7% and 15%
- Feed speed between 80 and 120 m/min - Timber surface planed
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
L40 L35 L24 L16 ft,k (N/mm²) 26,0 21,0 14,0 10,0 Et,mean (kN/mm²) 14,0 13,0 11,0 8,0 ρk (kg/m³) 420 400 350 310 a) See Clause 7.3 in EN 14081-1:2005 b) Timber size shall be to EN 336
fmod Comments and additional requirements Finland Norway Sweden Estonia Latvia Russiac) Poland Germany Austria Czech Republic FI NO SE ES LV RU PL DE AT CZ Spruce Picea abies 20 ≤ tn ≤ 50 80 ≤ bn ≤ 280 LS22 31 Requirements for grading: - Timber temperature: > 0°C - Timber mean moisture content between 7% and 15% - Feed speed between 80 m/min and 120 m/min - Timber surface planed
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
LS22 LS18 LS15 ft,k (N/mm²) 22,0 18,0 14,5 Et,mean (kN/mm²) 13,0 12,0 11,0 ρkd) (kg/m³) 390 370 350
LS18 23 LS15 14 LS22 LS15 36 29 a) See Clause 7.3 in EN 14081-1:2005 b) Timber size shall be to EN 336 c) Settings apply only to timber grown west of the Ural mountain range and north of the 550 line of latitude in Russia d) The density values are indicative only and were not taken into account when calculating settings
Finland Norway Sweden Latvia FI NO SE ES LV RU PL
FI NO SE LV Spruce Picea abies
Pine Pinus sylvestris
These settings are not for pine graded on its own. See other tables.
34 ≤ tn ≤ 75 60 ≤ bn ≤ 300
C24 4 300 000 Requirements for grading: - Air temperature between +10°C and +50°C - Relative humidity in the air: < 85 % - Timber temperature > -10 °C - Timber mean moisture content between 10% and 16% Dynagrade - Conveyor speed: ≤ 1 m/sec - Spacing between pieces: ≥ 200mm - Grading speed: ≤ 100 pieces/min Dynagrade HC - Conveyor speed: ≤ 1,3 m/sec - Spacing between pieces: ≥ 225mm - Grading speed for widths ≤ 250mm: ≤150 pieces/min Dynagrade XHC - Conveyor speed: ≤ 1,3 m/sec - Spacing between pieces: ≥ 225mm - Grading speed for widths ≤100mm: ≤240 pieces/min for 100 < b ≤ 250 mm:
78000/(b+225) pieces/min Actual setting, I is given in machine units and it is not affected by
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